Can't Import Into Hd500 Edit

Question

I am currently undertaking a full patch rebuild as I'm moving away from my trusty tube amp and going FRFR (shock horror). Anyways I have been trawling the Customtone archive to get some baseline (not bassline) tones and have found that when I drag some of them into HD500 Edit they are silent. All the amps, effects etc are visible but no sound!